Priority date set for international patent WO-2005120808-A1 on producing biodegradable films with improved mechanical properties, listing Bastioli as inventor.
On June 9, 2004, the priority date was established for what would become international patent application WO-2005120808-A1, "Process for the production of biodegradable films having improved mechanical properties," with Catia Bastioli listed as inventor and Novamont S.p.A. as assignee.
The priority date is significant in patent law because it establishes the earliest point from which the inventors' claim to the innovation is recognized internationally, even though the formal international filing occurred approximately a year later. This particular innovation addressed a persistent limitation of early bioplastic films: their mechanical properties, such as tensile strength and flexibility, often lagged behind conventional plastic films, limiting commercial applications.
Bastioli's research team developed a novel process combining bubble-blowing extrusion with cold stretching to enhance the mechanical performance of biodegradable films without compromising their compostability. This advancement was crucial for expanding the practical uses of bioplastic films in packaging, agriculture (such as mulch films), and consumer goods, helping to make biodegradable alternatives more competitive with traditional plastics on a performance basis, not just an environmental one.